ONE Gas provides natural gas distribution services to more than 2.3 million customers in Kansas, Oklahoma and Texas. Headquartered in Tulsa, Okla., its divisions include Kansas Gas Service, the largest natural gas distributor in Kansas; Oklahoma Natural Gas, the largest in the state; and Texas Gas Service, the third largest in the state in terms of customers.

Its largest natural gas distribution markets by customer count are Oklahoma City and Tulsa, Okla.; Kansas City, Wichita and Topeka, Kan.; and Austin and El Paso, Texas. ONE Gas serves residential, commercial, industrial, transportation and wholesale customers in all three states.